Motion responsive alarm system

Details Motion responsive alarm system Motion responsive alarm system

1976-02-09

1977-11-08

Swann, III, Glen R.

Communications: electrical

Systems

Call station

200 6147, 73654, 340280, G08B 1314

Patent

active

040577910

ABSTRACT:
The alarm system, which may be fastened to an object whose movement is to be monitored, includes a unique sensor array providing no output in any static orientation and a pulsating output in response to motional disturbances. A latch circuit is connected to the sensor array and develops a logically high output in response to a pulse from the sensor array. The output of the latch circuit remains logically high until the sensor array fails to output a pulse for a first predetermined time. A triggering circuit generates a trigger signal for activating a series of alarm functions after the latch circuit output has been continuously logically high for a number of the first predetermined time periods. Also, an alarm function may be connected to the latch circuit so as to activate whenever the latch output is logically high.

REFERENCES:
patent: 3129347 (1964-04-01), Tognola
patent: 3677077 (1972-07-01), Merryman et al.
patent: 3745815 (1973-07-01), Bentone et al.
patent: 3962696 (1976-06-01), Smith et al.

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